// -*- C++ -*-
// $RCSfile: tetragonal.h,v $
// $Revision: 1.4 $
// $Author: langer $
// $Date: 2000/10/13 20:02:58 $


/* This software was produced by NIST, an agency of the U.S. government,
 * and by statute is not subject to copyright in the United States.
 * Recipients of this software assume all responsibilities associated
 * with its operation, modification and maintenance. However, to
 * facilitate maintenance we ask that before distributing modifed
 * versions of this software, you first contact the authors at
 * oof_manager@ctcms.nist.gov. 
 */

/* An element with tetragonal symmetry */

#ifndef TETRAGONAL_H
#define TETRAGONAL_H

class TetragonalElement;

#include "genelement.h"

class TetragonalElement : public GTElement {
protected:
  double c11, c12, c13, c16, c33, c44, c66;
  static double c11_dflt, c12_dflt, c13_dflt, c16_dflt, c33_dflt,
    c44_dflt, c66_dflt;
  double alpha11, alpha33;
  static double alpha11_dflt, alpha33_dflt;
#ifdef THERMAL
  double kappa11, kappa33;
  static double kappa11_dflt, kappa33_dflt;
#endif // THERMAL
  static Element *binaryread(FILE*, TrueFalse&);
  static ElementTypeRegistration reg;
  static CharString nameplate;
public:
  TetragonalElement() {}
  TetragonalElement(Grid*);
  virtual ~TetragonalElement() {}
  static int Nnodes;
  virtual const CharString &tag() const { return nameplate; }

  static void AddArgs(CommandM *cmd) {
    GTElement::AddArgs(cmd);
    AddArgument(cmd, "c11", c11_dflt);
    AddArgument(cmd, "c12", c12_dflt);
    AddArgument(cmd, "c13", c13_dflt);
    AddArgument(cmd, "c16", c16_dflt);
    AddArgument(cmd, "c33", c33_dflt);
    AddArgument(cmd, "c44", c44_dflt);
    AddArgument(cmd, "c66", c66_dflt);
    AddArgument(cmd, "alpha11", alpha11_dflt);
    AddArgument(cmd, "alpha33", alpha33_dflt);
#ifdef THERMAL
    AddArgument(cmd, "kappa11", kappa11_dflt);
    AddArgument(cmd, "kappa33", kappa33_dflt);
#endif // THERMAL
  }
  
  virtual void binarywrite(FILE*, char) const;

  virtual CharString parameters() const;

  virtual Cijkl setCijkl() const;
  virtual SymmMatrix setAlpha() const;
#ifdef THERMAL
  virtual Kij setKij() const;
#endif // THERMAL

  friend class Debug;
};

#endif
